Overview of the Graco 108823 Packing O‑Ring
The 108823 Packing O‑Ring is a genuine OEM seal manufactured by Graco. It is made of PTFE (Polytetrafluoroethylene) and is designed to deliver reliable sealing in high‑pressure pump applications. According to Graco’s service documentation, part number 108823 appears in repair kits for the 2500‑Series pump family under the description “O‑RING, PTFE”. :contentReference[oaicite:0]{index=0}
Key Features & Benefits
- Material: PTFE — offers excellent wear and chemical resistance, and high durability.
- Function: Provides a tight seal in pump assemblies to prevent fluid bypass or pressure loss.
- OEM Fit: As a Graco part, it ensures proper fit and performance when used in the correct machine models.
- Maintenance Tip: When servicing your pump, always inspect the sealing groove and mating surfaces for wear or damage, and replace the o‑ring if it shows signs of extrusion, cracking or flattening.
Compatible Machines
According to the parts list in the Graco 2500 Series Pump Repair & Conversion Kit documentation (kit 220950 for pump models 220665 & 220668, among others), the O‑Ring part 108823 is listed specifically for the “2500 Series Pump” family. :contentReference[oaicite:1]{index=1}
Here’s a summarised list of compatible models (machines that the part fits):
- Graco 2500 Series Piston Pump Model **220665**
- Graco 2500 Series Piston Pump Model **220668**
- Graco 2500 Series Piston Pump Model **237010**
- Graco 2500 Series Piston Pump Model **237013**
Note: This list is not exhaustive. Always verify your exact model and serial number against the service manual to confirm compatibility.
Installation & Usage Tips
- Always depressurise and drain the system before performing any seal replacement work.
- Clean the groove and mating surfaces thoroughly—any debris or scoring may cause premature failure of the new O‑Ring.
- Lightly lubricate the O‑Ring where recommended (check manufacturer’s guidance) to aid installation and prevent twisting or damage.
- When reinstalling, ensure the O‑Ring seats evenly and is not pinched. Retorque the gland or assembly as specified in your service manual.
- Keep replacement O‑Rings in stock if you run frequent pump rebuilds—having a genuine OEM seal will reduce downtime and improve reliability.
Frequently Asked Questions
The Packing O‑Ring serves as a high‑pressure seal around the pump rod, or in a gland assembly, preventing fluid leakage or bypass under pressure. Its correct fit ensures consistent pump performance and avoids early wear of other components.
While the part is designed for the 2500 Series pumps (for example models 220665, 220668, 237010, 237013), it may **not** fit older or different series unless the service manual lists part number 108823 for that model. Always check your exploded parts diagram to confirm compatibility.
The O‑Ring is made of PTFE, which is chosen for its excellent chemical resistance, low friction, high temperature capability and long service life. These traits are especially important in high‑pressure pump environments where durability and seal integrity matter.
You should replace the O‑Ring when you notice: leaking around the packing gland, reduced pressure output, visible wear (flattening or cracking of the ring), or as part of a scheduled rebuild of the pump (recommended by OEM for 2500 Series pumps). Regular inspection is key.
Summary
In short, if you operate a compatible machine from the 2500 Series and your service documentation lists part number 108823 as the packing O‑Ring, this genuine Graco seal will deliver proper fit, performance and longevity. Remember to verify your exact machine model and service manual before placing your order.
